We've got one of these smelly things in our coop... but it's only caught about 15 flies. I don't trust it... and I constantly run into it!
Lol. I've started using a yard spray. The floor (ours is dirt, yay...not really) needs to be dry before letting them walk on it, so they free range. After spraying this stuff, I found a lot of maggots on top of the soil!!!

